IOTA/IOTA-ES occultation update for (3475) Fichte / TYC 1344-00990-1 event on 2024 Oct 24, 15:49 UT Visible from Summary ------- On 2024 Oct 24 UT, the 31.0157046345904 km diameter asteroid (3475) Fichte will occult a 9.0 mag star in the constellation Gemini for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 7.66 mag to 16.70 mag (the magnitude of the asteroid) for at most 2.700 seconds. This update is based on, astrometry for the asteroid kindly provided by the IAU Minor Planet Center. This work has made use of data from the European Space Agency (ESA) mission Gaia (http://www.cosmos.esa.int/gaia), processed by the Gaia Data Processing and Analysis Consortium (DPAC, http://www.cosmos.esa.int/web/gaia/dpac/consortium). Funding for the DPAC has been provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement. The event at a glimpse ---------------------- * Rank: 77 * date and approx. time of event: 2024 Oct 24, 15:40 - 2024 Oct 24, 15:59 * geocentric midpoint of event [JD]: 2460608.15954034 * magnitude of target star: 9.04 * magnitude drop [mag]: 7.66 * estimated maximum duration [s]: 2.700 * Moon: 47 % sunlit, 22° distance * Sun: 106° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 31 * 1 sigma uncertainty interval [path widths]: +/- 0.72 * 1 sigma uncertainty interval [seconds]: +/- 3.7 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.026, +/- 0.009) * 1 sigma uncertainty ellipse (major, minor, PA): (0.028", 0.004", 108°) * approx speed of asteroid's shadow [km/s]: 11.5383 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 1344-00990-1 by 3475 Fichte on 2024 Oct 24 Centre Star Star Sun Path Limits Error Limits Alt E. Longitude Latitude U.T. Alt Az Alt Limit 1 Limit 2 Limit 3 Limit 4 Crn o ' " o ' " h m s o o o o ' " o ' " o ' " o ' " Latitude Latitude Latitude Latitude 92 0 0 45 38 42 15 40 32.9 0 68 -48 45 29 37 45 47 46 45 16 29 46 0 55 .... 93 0 0 45 55 10 15 40 33.0 1 69 -49 45 46 8 46 4 11 45 33 3 46 17 17 -0.12 94 0 0 46 10 58 15 40 33.2 2 70 -49 46 1 59 46 19 57 45 48 57 46 32 59 -0.09 95 0 0 46 26 8 15 40 33.4 3 70 -49 46 17 11 46 35 5 46 4 13 46 48 3 -0.07 96 0 0 46 40 40 15 40 33.8 3 71 -50 46 31 45 46 49 34 46 18 51 47 2 29 -0.06 97 0 0 46 54 34 15 40 34.2 4 72 -50 46 45 42 47 3 27 46 32 50 47 16 18 -0.06 98 0 0 47 7 51 15 40 34.8 5 73 -50 46 59 1 47 16 42 46 46 13 47 29 30 -0.06 99 0 0 47 20 32 15 40 35.4 5 73 -50 47 11 44 47 29 20 46 58 59 47 42 6 -0.05 100 0 0 47 32 37 15 40 36.1 6 74 -50 47 23 51 47 41 23 47 11 8 47 54 6 -0.05 101 0 0 47 44 6 15 40 36.9 7 75 -51 47 35 22 47 52 51 47 22 42 48 5 31 -0.05 102 0 0 47 55 1 15 40 37.7 8 76 -51 47 46 18 48 3 43 47 33 41 48 16 21 -0.05 103 0 0 48 5 20 15 40 38.6 8 76 -51 47 56 39 48 14 1 47 44 5 48 26 36 -0.05 104 0 0 48 15 6 15 40 39.6 9 77 -51 48 6 26 48 23 45 47 53 54 48 36 17 -0.04 105 0 0 48 24 17 15 40 40.7 10 78 -51 48 15 40 48 32 55 48 3 9 48 45 25 -0.04 106 0 0 48 32 55 15 40 41.8 10 79 -52 48 24 19 48 41 32 48 11 51 48 54 0 -0.04 107 0 0 48 41 0 15 40 43.1 11 79 -52 48 32 25 48 49 35 48 19 59 49 2 1 -0.04 108 0 0 48 48 32 15 40 44.3 12 80 -52 48 39 59 48 57 6 48 27 34 49 9 30 -0.04 109 0 0 48 55 32 15 40 45.7 12 81 -52 48 46 59 49 4 4 48 34 37 49 16 27 -0.04 110 0 0 49 1 59 15 40 47.1 13 82 -52 48 53 28 49 10 30 48 41 7 49 22 52 -0.04 111 0 0 49 7 54 15 40 48.6 14 82 -52 48 59 24 49 16 25 48 47 5 49 28 44 -0.04 112 0 0 49 13 18 15 40 50.2 14 83 -52 49 4 48 49 21 47 48 52 30 49 34 6 -0.04 113 0 0 49 18 10 15 40 51.8 15 84 -52 49 9 41 49 26 38 48 57 24 49 38 55 -0.04 114 0 0 49 22 30 15 40 53.5 16 85 -52 49 14 2 49 30 58 49 1 47 49 43 14 -0.04 115 0 0 49 26 20 15 40 55.2 16 85 -52 49 17 52 49 34 47 49 5 37 49 47 2 -0.04 116 0 0 49 29 38 15 40 57.0 17 86 -52 49 21 11 49 38 4 49 8 57 49 50 19 -0.03 117 0 0 49 32 25 15 40 58.9 18 87 -52 49 23 59 49 40 51 49 11 45 49 53 5 -0.03 118 0 0 49 34 41 15 41 0.9 18 88 -52 49 26 15 49 43 7 49 14 3 49 55 20 -0.03 119 0 0 49 36 27 15 41 2.9 19 88 -52 49 28 1 49 44 52 49 15 49 49 57 5 -0.03 120 0 0 49 37 42 15 41 5.0 20 89 -52 49 29 16 49 46 7 49 17 4 49 58 19 -0.03 121 0 0 49 38 26 15 41 7.1 20 90 -52 49 30 0 49 46 51 49 17 49 49 59 3 -0.03 122 0 0 49 38 39 15 41 9.4 21 91 -52 49 30 14 49 47 4 49 18 2 49 59 16 -0.03 123 0 0 49 38 21 15 41 11.7 22 92 -52 49 29 56 49 46 47 49 17 45 49 58 59 -0.03 124 0 0 49 37 33 15 41 14.0 22 92 -52 49 29 8 49 45 59 49 16 56 49 58 11 -0.03 125 0 0 49 36 14 15 41 16.4 23 93 -52 49 27 49 49 44 40 49 15 36 49 56 52 -0.03 126 0 0 49 34 24 15 41 18.9 23 94 -52 49 25 59 49 42 50 49 13 46 49 55 3 -0.03 127 0 0 49 32 3 15 41 21.5 24 95 -52 49 23 37 49 40 30 49 11 24 49 52 43 -0.03 128 0 0 49 29 11 15 41 24.1 25 95 -52 49 20 45 49 37 38 49 8 30 49 49 52 -0.03 129 0 0 49 25 48 15 41 26.9 25 96 -52 49 17 21 49 34 15 49 5 6 49 46 30 -0.03 130 0 0 49 21 53 15 41 29.7 26 97 -52 49 13 25 49 30 21 49 1 9 49 42 37 -0.03 131 0 0 49 17 26 15 41 32.5 27 98 -52 49 8 58 49 25 55 48 56 41 49 38 12 -0.03 132 0 0 49 12 28 15 41 35.5 27 98 -52 49 3 58 49 20 57 48 51 40 49 33 16 -0.03 133 0 0 49 6 57 15 41 38.5 28 99 -52 48 58 27 49 15 27 48 46 7 49 27 47 -0.03 134 0 0 49 0 54 15 41 41.6 29 100 -51 48 52 22 49 9 25 48 40 1 49 21 47 -0.03 135 0 0 48 54 18 15 41 44.7 29 101 -51 48 45 45 49 2 51 48 33 23 49 15 13 -0.03 136 0 0 48 47 9 15 41 48.0 30 102 -51 48 38 35 48 55 43 48 26 11 49 8 7 -0.03 137 0 0 48 39 27 15 41 51.4 31 102 -51 48 30 51 48 48 2 48 18 25 49 0 28 -0.03 138 0 0 48 31 10 15 41 54.8 32 103 -51 48 22 34 48 39 47 48 10 5 48 52 16 -0.03 139 0 0 48 22 20 15 41 58.3 32 104 -51 48 13 42 48 30 58 48 1 11 48 43 29 -0.03 140 0 0 48 12 55 15 42 1.9 33 105 -50 48 4 15 48 21 35 47 51 42 48 34 8 -0.02 141 0 0 48 2 55 15 42 5.6 34 105 -50 47 54 13 48 11 36 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35 13 -0.02 167 0 0 39 41 23 15 44 24.3 54 125 -40 39 31 21 39 51 25 39 16 49 40 5 58 -0.02 168 0 0 39 10 59 15 44 31.7 55 125 -40 39 0 52 39 21 5 38 46 14 39 35 44 -0.02 169 0 0 38 39 35 15 44 39.4 56 126 -39 38 29 24 38 49 46 38 14 39 39 4 32 -0.02 170 0 0 38 7 11 15 44 47.3 57 127 -38 37 56 55 38 17 27 37 42 3 38 32 20 -0.02 171 0 0 37 33 46 15 44 55.3 58 127 -38 37 23 25 37 44 6 37 8 25 37 59 6 -0.02 172 0 0 36 59 17 15 45 3.6 59 128 -37 36 48 52 37 9 43 36 33 45 37 24 50 -0.02 173 0 0 36 23 45 15 45 12.1 60 129 -36 36 13 14 36 34 16 35 58 0 36 49 29 -0.02 174 0 0 35 47 7 15 45 20.8 61 130 -36 35 36 32 35 57 43 35 21 10 36 13 5 -0.02 175 0 0 35 9 24 15 45 29.8 62 130 -35 34 58 43 35 20 5 34 43 14 35 35 34 -0.02 176 0 0 34 30 33 15 45 39.0 63 131 -34 34 19 47 34 41 19 34 4 10 34 56 56 -0.02 177 0 0 33 50 34 15 45 48.4 65 132 -34 33 39 42 34 1 26 33 23 58 34 17 10 -0.02 178 0 0 33 9 26 15 45 58.1 66 132 -33 32 58 29 33 20 23 32 42 37 33 36 15 -0.02 179 0 0 32 27 7 15 46 8.0 67 133 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Uncertainty in time = +/- 4 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: TYC 1344-00990-1 * constellation : Gemini * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 07 03 55.5568 DE: +15 18 08.494 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 07 03 55.5569 DE: +15 18 08.493 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 9.0 * B mag [mag]: 9.5 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (3475) Fichte asteroid class: approx. diameter [km]: 31 approx. diameter ["]: 0.018 distance from Earth [AU]: 2.37560 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#52 date of fit: 2023 Feb 10 source of used astrometry: MPC, JPL number of used observations: 0 number of rejected observations: 0 time covered by the observations: 1800 Jan 01 - 1800 Jan 01 1 sigma uncertainty ellipse (major, minor, PA): 0.028", 0.004", 108.341° remarks: * orbital elements for (3475)Fichte : Mean anomaly = 340.7329484123 deg Arg. of pericenter = 229.1796914792 deg Long. of node = 241.8592769728 deg Inclination = 15.0096978629 deg Eccentricity = 0.1244789187 Semimajor axis = 3.1802274650 AU Perihelion dist = 2.7843561890 AU Mag: H = 11.58, G = 0.15 Epoch of elements : MJD 60607.65953763 TDT (2024 Oct 24.6595) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#522023Feb10,2.70,2024,10,24,15.828968,0.022608,0.022308,4.549039,-4.660372,-0.005554,0.000827,0.000000,0.000000 -164.6369,15.2670,-61.41,-12.08,False TYC 1344-00990-1,7.06543243,15.3023594,9.53,9.04,8.78,0.1,0,,7.08912917,15.2669710,7.66,7.48,0,0,0 3475,Fichte,16.70,31.188,2.3756,0,0,1.164,-17.25,,1.8,0 0,340.6183,2024,10,24,229.1797,241.8593,15.0097,0.12448,3.18023,2.78436,11.58,5.0,0.15 1.725,0.0277,0.0037,108,0.0131,Known errors,1.11,0,-1,-1 20241024_0990-1,60140.66 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 15:45 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org